A size difference between mitochondrial DNA molecules of urodele and anuran amphibia.
D000818:Animals; D001001:Anura; D002499:Centrifugation, Density Gradient; D002586:Cesium; D002712:Chlorides; D004247:DNA; D003720:Densitometry; D008854:Microscopy, Electron; D008928:Mitochondria; D013045:Species Specificity; D014562:Caudata
D002712:Chlorides; D002586:Cesium; D004247:DNA